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墨西哥是世界主要产油国之一,海相碳酸盐岩地层分布广泛。储层是形成大型碳酸盐岩油气田的关键因素,EPC区块位于Tampico盆地,白垩系的海相碳酸盐岩是其主要的含油气储层。利用岩心、薄片、测井、地震资料,结合前人研究成果对EPC区块白垩系的主要储层进行了研究,通过分析岩心和薄片资料,确定区域地层的岩石学特征,在此基础上,结合威尔逊的碳酸盐岩沉积模式确定了白垩系地层岩石相(沉积相)展布特征和发育模式。
Mexico is one of the major oil producing countries in the world and marine carbonate rock formations are widely distributed. The reservoir is a key factor in the formation of large-scale carbonate oil and gas fields. The EPC block is located in the Tampico Basin. Cretaceous marine carbonate rocks are the major hydrocarbon-bearing reservoirs. The core reservoirs of the Cretaceous in the EPC block are studied by using the core, thin slice, well logging and seismic data, and the data of the core and thin sections are analyzed to determine the petrological characteristics of the regional strata. On this basis, Combined with Wilson’s carbonate depositional model, the lithofacies facies (sedimentary facies) distribution characteristics and development patterns of the Cretaceous are determined.